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Page 10
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Cost
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Item
Description
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Click Picture
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$13.00 |
PR1008c
Here is a very nice Raspberry Calcite specimen. It measures 4 3/4" x 3" x
over 2 1/2" and has a nice shine. This beauty has a unique design
and appearance. A great mineral to add to your collection.
Another photo
Another photo
Calcite is a Carbonate mineral that is most widely distributed on the Earth's
surface. It is a common constituent of sedimentary rocks with Limestone
in particular. A Calcite formation can take on many different shapes
and sizes which is dependent on the location, ground water occurrence and
temperature. Calcite is usually white or colorless but can be gray,
red, yellow, green, blue, violet, brown or black. The deeper the color
is usually indicative of the definitive impurities from the earth or water.
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Raspberry Calcite
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$12.00 |
PR1009b
This is a nice, above average quality South Dakota Prairie Agate.
It measures approximately 3" x 2 3/4" x 2 3/8" and was
polished on all sides here at the Rock Shed. This cool Agate has
lots of Agate banding with a very pretty Yellowish Tan with Cream and Grey
accent colors. A nice display piece for your collection. Very
nice!
Another photo
Another photo
Agates mostly occur as nodules in volcanic rocks or waters
containing Silica in solution which is possibly derived from the decomposition
of Silicates in the lava. The Siliceous matter is deposited in regular
layers resulting in the banded or striped formation. It is very unlikely
that you would ever find an exact duplicate of any type of Agate, Brazilian
or other.
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SD Prairie Agate
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$12.00 |
PR1005c
One of the favorites of the Rock Shed returns!!! Here is a larger, good
quality Selenite Massage Wand. It measures 7" x 1 1/2 and has been hand
polished. Each end has a smooth finish to prevent cuts or scrapes.
The larger size is easier to handle with either hand and works well with different
hand sizes. Item will be similar to item in photo.
Selenite, also known as Satin Spar, Desert Rose and Gypsum Flower, are
the four Crystalline varieties of Gypsum. It is a very soft material
composed of Calcium Sulfate. Selenite is often transparent and colorless.
If color is present it is often due to impurities or presence of other minerals.
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Selenite Massage Wand
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$26.00 |
PR1001b
Here is a unique treasure! This is a polished Rutilated Quartz
crystal.
It measures over 1 3/4" x 1 1/4" x nearly 1 " and has a warm brown color. Although
it may be hard to see in the photo, this specimen has many "hair like" rutiles
throughout the entire piece. A definite must have for the polished rock
collector.
Another photo
Another photo
Quartz is the second most common mineral in the Earth's
continental crust. It is mainly composed of Silica or Silica based minerals.
Although Quartz is known by a variety of names, the most important distinction
between types of Quartz is that of macro-crystalline, individual crystals
visible to the unaided eye, and micro-crystalline, where aggregates of crystals
are only visible under high magnification. There are many forms of Quartz
including Chalcedony, Amethyst, Citrine, and Carnelian which are results of
mineral impurities or heat treatments.
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Rutilated Quartz Crystal
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$50.00 |
PR1006c
This is a very pretty, above average quality, multi-colored
Brazilian Agate slab. It has been cut and polished to show the colorful
banding and design on the inside. This pretty Brazilian Agate slab has an
awesome sparkly crystal center and including the wooden display stand measures
over 6 3/8" x nearly 4 7/8" x over 2". The agate slab
itself is 1/2" thick and is highly polished on the front
and back.
It makes for a very interesting display piece or would make an excellent gift.
Another photo
Agates mostly occur as nodules in volcanic rocks or waters containing
Silica in solution which is possibly derived from the decomposition of Silicates
in the lava. The Siliceous matter is deposited in regular layers resulting
in the banded or striped formation. It is very unlikely that you would
ever find an exact duplicate of any type of Agate, Brazilian or other.
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Brazilian Agate
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$45.00 |
PR1007b
This is a great find!! Here is a larger, above average quality
specimen of Labradorite. It measures 4 1/4" tall x nearly 3
7/8" x
over 1 3/4" and has a good polish. This specimen has a good color mix with
a highly iridescent "Blue" shine and has some small areas of Biotite Mica that show up
dull black. This would make a great gift for the "hard to buy for" person.
Another photo
Another photo
Labradorite is a Feldspar mineral that occurs in large Crystal masses
in anorthosite and shows an iridescence or "play of colors." Gemstone
varieties of Labradorite exhibiting a high degree of iridescence are Spectrolite,
Moonstone and Sunstone. High quality samples with good iridescent qualities
are desired for jewelry.
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Labradorite
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$24.00 |
PR1003b
Here is something different from the Rock Shed's gift department.
This is a very nice, above average quality Pakistani Onyx Vase. This
pretty vase measures almost 5 7/8" x nearly 3" and has a nice Green, Brown
and Cream color mix and a very different design. A great gift
for mom or grandma.
Another photo
Another photo
Onyx is a banded variety of Calcite. The colors of its bands range
from white to almost every color except shades of purple, blue and black.
It is used for vases, bowls, beads, cabochons and other items. This
type of Onyx is found in Mexico and Pakistan. It is often carved, polished
and sold in a variety of different things.
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Onyx Vase
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$35.00 |
PR1012b
Here is an above average
quality specimen of Petrified Wood Slab. It has been
highly polished on one side and measures 6 1/4" x 5 7/8"x 1/2" thick.
The wood has a nice blend of Earth tone colors and has an interesting irregular
shape and design. This pretty Petrified Wood Slab is a very nice specimen.
Another photo
Another photo
Click
Here to See More Petrified Wood Specimens
Petrified Wood is a type of a fossil as it consists of fossil wood where
all the organic materials have been replaced with minerals while retaining
the original structure of the wood. These minerals are most often Silicates
such as Quartz. Other minerals, Manganese, Iron and Copper, in the water
or mud during the petrification process give Petrified Wood a variety of color
ranges: black - Carbon; green/blue - Copper; red/brown/yellow - Iron.
Petrified Wood can preserve the original structure of the wood in all its
detail all the way down to the microscopic level. Structures such as
tree rings and the various tissues are often observed features. Although
Petrified Wood can be found worldwide, it is rather rare in larger quantities
and at times can be difficult to obtain by the average collector.
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Petrified Wood
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$30.00
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PR1000c
This is a
very pretty specimen of South Dakota Puddingstone. It has a nice darker
Red color on a brown background with Yellow and White accents. The slab was cut and polished on the face
in our own Lapidary department. The specimen measures nearly 9 1/4" x 7" x
3/4". A true treasure.
Puddingstone is a conglomerate sedimentary rock with an appearance
like a tinted concrete but is natural. It's name comes from English
settlers to South Dakota in the 1840s because it looks like Christmas
pudding with cherries and currants.
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South Dakota Puddingstone
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$50.00
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PR1002b
Here is a
wonderful find!! This is a very nice, larger Dugway Geode from Utah. It
measures 8 1/8" x over 6 1/4" x almost 2 5/8" and is
highly polished on the face. It has an amazing cavity with druzy
crystals of a grayish lavender color. A very nice
conversation piece or a pretty display item.
Another photo
Another photo
Geodes are geological rock formations which occur in sedimentary and
certain volcanic rocks. They are essentially rock cavities or vugs with
internal Crystal formations or concentric banding. The exterior is generally
Limestone while the interior contains Quartz Crystals and/or Chalcedony deposits.
If the Geode is completely filled with Crystal, being solid all the way through,
it is then called a nodule.
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Dugway Geode
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$45.00
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PR1004b
This is a very
pretty, above average quality Quartz Crystal cluster. This crystal has
several crystals in very good quality and with near perfect points.
It is virtually clear with a few internal inclusions that give a real sparkly
appearance. This one measures 3 3/4" x 1 7/8" x 2 1/2". A true
beauty.
Quartz is the second most common mineral in the Earth's continental
crust. It is mainly composed of Silica or Silica based minerals.
Although Quartz is known by a variety of names, the most important distinction
between types of Quartz is that of macro-crystalline, individual crystals
visible to the unaided eye, and micro-crystalline, where aggregates of crystals
are only visible under high magnification. There are many forms of Quartz
including Chalcedony, Amethyst, Citrine, and Carnelian which are results of
mineral impurities or heat treatments.
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Crystal Quartz Cluster
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$32.00
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PR1013c
Here is a very
cool Green Calcite Free Form from Mexico. It has many, many crystals
in various shades of green. It measures over 5 1/2" x 4" x 4 3/4" tall and is
nicely polished. It has Rhyolite on the one end. A very unique gift for someone special or add it to your
own collection.
Another photo
Another photo
Calcite is a Carbonate mineral that is most widely distributed on the
Earth's surface. It is a common constituent of sedimentary rocks with
Limestone in particular. A Calcite formation can take on many different
shapes and sizes which is dependent on the location, ground water occurrence
and temperature. Calcite is usually white or colorless but can be gray,
red, yellow, green, blue, violet, brown or black. The deeper the color
is usually indicative of the definitive impurities from the earth or water.
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Green Calcite
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$20.00
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PR1011b
This is a very
pretty, larger desert Selenite specimen from Morocco. This specimen measures
nearly 4 1/2" x 3 1/4" x 2 1/4". This unusual piece has a soft Copper Brown
color with a real unique shape. A one of a kind gift for that one of
a kind person.
Another photo
Another photo
Selenite, also known as Satin Spar, Desert Rose and Gypsum Flower, are
the four Crystalline varieties of Gypsum. It is a very soft material
composed of Calcium Sulfate. Selenite is often transparent and colorless.
If color is present it is often due to impurities or presence of other minerals.
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Selenite Desert Rose
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$25.00
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PR1010c
This is a
very nice Tee Pee Canyon Agate from Custer, South Dakota. It
measures over 1 3/4" x 1 5/8" x 1 1/8" and is polished on
sides. This gorgeous Agate has excellent agate designs with
excellent banding in several places on the specimen with various Red colors all
on a earth tone background. It has been polished in the Rock Shed's own
Lapidary department. A stunning display piece
for your collection. Very beautiful!
Another photo
Another photo
Agates mostly occur as nodules in volcanic rocks or waters containing
Silica in solution which is possibly derived from the decomposition of Silicates
in the lava. The Siliceous matter is deposited in regular layers resulting
in the banded or striped formation. It is very unlikely that you would
ever find an exact duplicate of any type of Agate, Brazilian or other.
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Tee Pee Canyon Agate
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